Chojambula chake ndi chachikulu kuposa bailey bridge panel koma mawonekedwe ake ndi osavuta.Zigawo zonse zimatsekedwa kotero kuti mlatho ukhoza kugwiritsidwa ntchito ngati mlatho wokhazikika chifukwa cha kuchepa kwake kochepa.Zigawozo zimasinthasintha komanso mobwerezabwereza.
Mlatho wa D-Type Big Span Steel Bridge wakhala ukugwiritsidwa ntchito kwambiri populumutsa ndi tsoka, zomangamanga zamagalimoto, zomangamanga zamatauni zosungira madzi, kulimbitsa mlatho woopsa, ndi zina zotero kuwonjezera pa kukhala mlatho wachitsulo wokonzekera nkhondo.
1.Mapangidwe osavuta
2.kusinthasintha kwamphamvu
3.kusinthasintha kwabwino
4. nthawi yayitali
5.kupulumutsa mtengo
6.wider ntchito